The Blade 400 3D is designed to give intermediate to advanced heli pilots a ready-to-fly experience like no other. It comes 100% factory built and flight tested so you can get flying right away. The Blade 400 3D is equipped with state-of-the-art features like brushless power, digital servos, a heading lock gyro, CCPM control and symmetrical blades. Its also big enough that you can fly outdoors in breezier conditions that would ground smaller micro-helis. And because its flight tested at the factory no pre-flight setup is required. The Blade 400 3D is ready for everything from smooth hovering to 3D aerobatic flying as soon as you finish charging the battery. There is nothing left to assemble or set up. You can fly it just about anywhere, anytime thanks to the included Spektrum 2.4GHz DX6i radio system that avoids interference with other RC users, even those on other 2.4GHz systems. You also get the benefit of the DX6i+óGé¼Gäós advanced DSM2 protocol that provides the kind of locked-in, solid response that will let you fly even the most demanding 3D maneuvers with absolute precision. The Blade 400 3D is the first ready-to-fly mini-heli to come equipped with Spektrum advanced DX6i 2.4GHz DSM2+ 6-channel programmable computer aircraft system. Besides providing freedom from frequency restrictions and interference, the DX6i DSM2 technology offers other unique advantages like faster control response and innovative features such as ServoSync+. ServoSync automatically resequences transmitted data so mixed servos receive their pulses at the same time so you can fly extreme 3D aerobatics with absolute precision. The system also includes the feather-light, 4.4-gram Spektrum AR6100e Microlite Receiver. E-flite uses top-quality engineering and materials in everything it makes, so you always get the maximum level of value and fun. And E-flite backs all of its products with the best customer service and support in the hobby so your electric flight experience is always a positive one. Features * Completely assembled and test flown at the factory * Capable of sport flying and 3D aerobatics right out of the box * Includes Spektrums DX6i 2.4GHz DSM2 6-Channel computer programmable transmitter and factory-installed AR6100e Microlite receiver * DS75 Digital Sub-Micro servos and G110 Micro Heading Lock gyro offer precise and powerful control * 420H brushless motor, 25-amp brushless ESC and 3S 11.1V 1800mAh 20C Li-Po battery deliver incredible power and performance * CCPM control with push-pull elevator and direct-to-swash aileron/pitch linkages Specifications: Type: RTF Electric 3D Mini Heli Main Rotor Diameter: 28.2 in (718mm) Tail Rotor Diameter: 5.3 in (135mm) Rotor Blade Length: 12.8 in (325mm) Height: 9.0 in (230mm) Length: 25.6 in (650mm) Gross Weight: RTF with Li-Po battery, 23.5 oz (665 g) Motor: 420H brushless outrunner, 3800kV ESC: 25-amp brushless Battery: 3S 11.1V 1800mAh 20C Li-Po Charger: E-flite 3S 11.1V LiPo Balancing Charger 1.8A Transmitter: Spektrum DX6i 2.4GHz DSM2 6 Channel Computer Programmabe Transmitter Receiver: Spektrum AR6100e Microlite receiver Servos: E-flite DS75 Digital Sub-Micro Servos (4) Gyro: E-flite G110 Micro Heading Lock. Guarantee Packaging